Can I get some advice about starting an opae ula habitat? You're using BBQ volcanic rocks? Like from the outdoors section at Home Depot / Walmart? And how did you get so much algae to grow? Just left the light on or did you have a starting portion? Also what do you use to test salinity? Never done salt water.

Thinking of adding nerites to mine too hoping they'll breed and hatch. I'm surprised there aren't more people with opae ula tanks.